Taylor, C. M. & Z. S. Rogers (2013). Six new species of Danais Vent. (Rubiaceae, Danaideae) from Madagascar. Candollea 68: 167–180. In English, English and French abstracts.
Danais Vent. (Rubiaceae, Danaideae) comprises about forty species of woody climbing plants, with most of them found in Madagascar. Recent exploration there has documented six new endemic species that are described, illustrated, and mapped here: Danais antilahimenae C. M. Taylor, Danais disticha C. M. Taylor, Danais laciniata C. M. Taylor, Danais masoalana C. M. Taylor, Danais rakotovaoi C. M. Taylor, and Danais randrianaivoi C. M. Taylor. All six occur in humid vegetation and qualify as threatened based on preliminary IUCN conservation assessment (one “Critically Endangered”, four “Endangered”, one “Vulnerable”).